Bioslurping
http://en.wikipedia.org/wiki/Groundwater_remediation
http://www.cpeo.org/techtree/ttdescript/bislurp.htm
Bioslurping
combines elements of bioventing and vacuum-enhanced pumping of free-product
that is lighter than water to
recover free-product from the groundwater and soil, and to bioremediate soils.
Bioslurper
system uses a slurp tube that extends into free product layer. Much like straw
in glass draws liquid the pump draws liquid and soil gas up the tube.
Pumping
lifts liquids lighter than water off
the top of the water table and from the capillary fringe. The biological
processes in the term bioslurping refer to aerobic biological degradation of
the hydrocarbons when air is introduced into the unsaturated zone. This is
similar to bioventing.
When
free product removal activities are completed, the bioslurping system is
converted to bioventing system, of biodegradation.